Kratos Design Group 6-Position M4/Carbine Length Receiver Extension / Buffer Tube 7075-T6
The Kratos M4 Receiver Extension is a 6-position, Mil-Spec sized, AR15 / M4 profile buffer tube and is designed to work with Mil-Spec dimensioned M4/AR-15 type collapsible stocks.
Constructed of impact-extruded 7075-T6 aluminum with Type III, Class 2 hard coat anodizing for an extremely hard, abrasion resistant surface.
Finding the perfect length of pull is easy with six adjustable stock positions.
Weight: 3.9oz
Material: Impact Extruded 7075 aluminum
Finish: Type 3, Class 2 hardcoat Anodize
Made in USA








ajh6xd (verified owner) –
Excellent quality, fit and finish!
Michael Guillot (verified owner) –
Needed an FDE tube. Perfect fit clean finish
PlaidPork (verified owner) –
Really good fit and finish on these. Solid product that just works.
Paul Richburg (verified owner) –
Product is fantastic. The fit and finish is outstanding and 100% better than the product it replaced. Great price from great people. Thank you!
Brendon Bennett (verified owner) –
Awesome product!